#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int s_changdu(char* s)
{
	if (*s != '\0')
	{
		return 1 + s_changdu(s+1);
	}
	return 0;

}
int main()
{
	char arr[] = { "byte" };
	s_changdu(arr);
	printf("%d", s_changdu(arr));
	return 0;
}